阅读说明：本技术 一种复合有机玻璃的环保型eva中间膜 (Environment-friendly EVA (ethylene-vinyl acetate) intermediate film for composite organic glass ) 是由 张春飞 于 2021-01-20 设计创作，主要内容包括：本发明公开了一种复合有机玻璃的环保型EVA中间膜,涉及EVA中间膜技术领域,为解决现有技术中的现有的EVA中间膜在与玻璃贴合使用后表面会沾染上灰尘同时膜体的含水量也会增加,从而导致膜体无法进行回收利用的问题。所述EVA胶膜包括EVA主膜层、EVA胶黏层和纳米间离膜层,所述纳米间离膜层设置在EVA主膜层的两侧表面,且EVA胶黏层设置在纳米间离膜层的外表面,所述EVA胶膜的两侧均设置有隔离平光膜,且EVA胶膜设置在有机玻璃之间,所述隔离平光膜包括热反射膜层、UV固胶层和增粘胶层,且UV固胶层和增粘胶层与热反射膜层贴合连接,所述UV固胶层与有机玻璃贴合连接,且增粘胶层与EVA胶黏层贴合连接。(The invention discloses an environment-friendly EVA (ethylene vinyl acetate) intermediate film for composite organic glass, relates to the technical field of EVA intermediate films, and aims to solve the problem that the surface of the existing EVA intermediate film in the prior art is stained with dust after the existing EVA intermediate film is used by being attached to glass, and the water content of a film body is increased, so that the film body cannot be recycled. The EVA glued membrane includes that EVA owner rete, EVA gluing layer and nanometer are from the rete between, the setting of the rete is at the both sides surface of EVA owner rete between the nanometer in the nanometer between from the rete, and EVA gluing layer sets up the surface at the nanometer, the both sides of EVA glued membrane all are provided with keeps apart the smooth membrane, and the EVA glued membrane setting between organic glass, keep apart the smooth membrane and include heat reflection rete, UV glue film and adhesion promotion glue film, and UV glue film and adhesion promotion glue film and heat reflection rete laminating connection, UV glue film is connected with the organic glass laminating, and adhesion promotion glue film and EVA glue film laminating are connected.)

1. The utility model provides a compound organic glass's environment-friendly EVA intermediate coat, includes EVA glued membrane (1), its characterized in that: EVA glued membrane (1) includes that EVA owner rete (5), EVA adhesive layer (6) and nanometer are from rete (7), from rete (7) between the nanometer sets up the both sides surface at EVA owner rete (5), and EVA adhesive layer (6) sets up the surface at nanometer between from rete (7), the both sides of EVA glued membrane (1) all are provided with keep apart plain film (3), and EVA glued membrane (1) sets up between organic glass (2).

2. The environment-friendly EVA intermediate film for composite organic glass according to claim 1, wherein: keep apart plain film (3) including heat reflection film layer (9), UV solid glue film (8) and tackification glue film (10), and UV solid glue film (8) and tackification glue film (10) are connected with heat reflection film layer (9) laminating.

3. The environment-friendly EVA intermediate film for composite organic glass according to claim 2, wherein: UV solid glue film (8) are connected with organic glass (2) laminating, and tackify glue film (10) are connected with EVA gluing layer (6) laminating.

4. The environment-friendly EVA intermediate film for composite organic glass according to claim 3, wherein: the periphery of the organic glass (2) is provided with a moisture-proof melting adhesive tape (4), and the moisture-proof melting adhesive tape (4) is attached to the EVA adhesive film (1).

5. The environment-friendly EVA intermediate film for composite organic glass according to claim 4, wherein: the preparation method for attaching the EVA adhesive film (1) comprises the following steps:

the method comprises the following steps: using ethylene and vinyl acetate as main raw materials, and then copolymerizing the main raw materials under high pressure to obtain resin as basic resin;

step two: then adding a tackifier for improving the bonding strength, a glue solution viscosity and solidification speed regulator and a small amount of antioxidant, uniformly stirring, and pouring the raw materials into a film making machine for processing a film body;

step three: dividing the molded membrane body into an EVA main membrane layer (5) and an EVA adhesive layer (6), wherein the thickness of the EVA main membrane layer (5) is 270-300 mu m, and the thickness of the EVA adhesive layer (6) is controlled to be 100-130 mu m;

step four: preparing a nano-separation film layer (7) by using EVA (ethylene-vinyl acetate) as a base material and matching with a high polymer material under the processing of a vacuum high-pressure machine, wherein the molecular gap is 3-4;

step five: covering the outer surface of the EVA main film layer (5) with the nano-separation film layer (7), covering the outer side of the EVA adhesive layer (6), and putting the EVA adhesive layer into a hot press to be pressurized to form an EVA adhesive film (1);

step six: and finally, non-transparent release film paper is pasted on the surface of the EVA adhesive film (1), and the EVA adhesive film can be matched with the isolation flat film (3) to be pasted for use.

6. The environment-friendly EVA intermediate film for composite organic glass according to claim 5, wherein: in the second step, the tackifier is rosin, and the solidification speed regulator is paraffin.

7. The environment-friendly EVA intermediate film for composite organic glass according to claim 5, wherein: in the fifth step, the thickness of the EVA adhesive film (1) after hot press molding is 420-425 micrometers.

8. The environment-friendly EVA intermediate film for composite organic glass according to claim 5, wherein: in the sixth step, the thickness of the isolation flat film (3) is 25-30 μm.

Technical Field

The invention relates to the technical field of EVA (ethylene-vinyl acetate) intermediate films, in particular to an environment-friendly EVA intermediate film for composite organic glass.

Background

EVA is a kind of thermosetting adhesive film, used for putting in the middle of the laminated glass, because EVA glue film has superiority in adhesion, durability, optical characteristic, etc., make it apply to the electric current assembly and various optical products more and more extensively, because the material characteristic reason of EVA, there is very high requirement when EVA processes the shaping. According to the harsh requirements of the solar cell on service life, ageing resistance and the like, a plurality of domestic manufacturers make great progress in the aspect of the formula through continuous repeated tests.

However, after the existing EVA intermediate film is used by being attached to glass, the surface of the existing EVA intermediate film is stained with dust, and the water content of the film body is increased, so that the film body cannot be recycled; therefore, the existing requirements are not met, and an environment-friendly EVA intermediate film of composite organic glass is provided for the requirements.

Disclosure of Invention

The invention aims to provide an environment-friendly EVA (ethylene vinyl acetate) intermediate film for composite organic glass, which aims to solve the problem that the existing EVA intermediate film in the background art cannot be recycled due to the fact that the surface of the film body is stained with dust and the water content of the film body is increased after the existing EVA intermediate film is attached to glass for use.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a compound organic glass's environment-friendly EVA intermediate coat, includes the EVA glued membrane, the EVA glued membrane includes that EVA owner rete, EVA adhesive layer and nanometer are from the rete, the setting of nanometer is from the rete both sides surface at EVA owner rete, and the EVA adhesive layer sets up the surface at nanometer is from the rete, the both sides of EVA glued membrane all are provided with the isolation plain film, and the EVA glued membrane setting is between organic glass.

Preferably, the isolation plain film comprises a heat reflection film layer, a UV glue fixing layer and a tackifying glue layer, and the UV glue fixing layer and the tackifying glue layer are attached to the heat reflection film layer.

Preferably, the UV glue fixation layer is connected with the organic glass in a laminating manner, and the tackifying glue layer is connected with the EVA glue layer in a laminating manner.

Preferably, moisture-proof melting adhesive tapes are arranged on the periphery of the organic glass and are attached to the EVA adhesive film.

Preferably, the preparation method for attaching the EVA adhesive film comprises the following steps:

the method comprises the following steps: using ethylene and vinyl acetate as main raw materials, and then copolymerizing the main raw materials under high pressure to obtain resin as basic resin;

step two: then adding a tackifier for improving the bonding strength, a glue solution viscosity and solidification speed regulator and a small amount of antioxidant, uniformly stirring, and pouring the raw materials into a film making machine for processing a film body;

step three: dividing the molded membrane body into an EVA main membrane layer and an EVA adhesive layer, wherein the thickness of the EVA main membrane layer is 270-300 mu m, and the thickness of the EVA adhesive layer is controlled to be 100-130 mu m;

step four: preparing a nano-interlayer film layer by using EVA (ethylene-vinyl acetate copolymer) as a base material and matching with a high polymer material under the processing of a vacuum high-pressure machine, wherein the molecular gap is 3-4;

step five: covering the nanometer separation film layer on the outer surface of the EVA main film layer, covering the EVA adhesive layer on the outer side, and putting the EVA adhesive layer into a hot press to be pressurized to form an EVA adhesive film;

step six: at last, the surface of the EVA adhesive film is pasted with non-transparent release film paper, and the EVA adhesive film is required to be matched with an isolation flat film for pasting.

Preferably, in the second step, the tackifier is rosin, and the solidification rate regulator is paraffin.

Preferably, in the fifth step, the thickness of the EVA adhesive film after hot press molding is 420-425 μm.

Preferably, in the sixth step, the thickness of the isolation flat film is 25-30 μm.

Compared with the prior art, the invention has the beneficial effects that:

1. the EVA adhesive film comprises an EVA main film layer, an EVA adhesive layer and a nanometer separation film layer, wherein the nanometer separation film layer is arranged between the EVA main film layer and the EVA adhesive layer, the EVA adhesive layer is positioned on the outermost side of the film body and can be attached to an object, when the recovery operation is carried out, glass with the EVA adhesive film is placed into a high-temperature heating box to be heated to 130-150 ℃, molecules of the nanometer separation film layer move at a high speed, gaps among the molecules are increased, so that the connection structures among the EVA main film layer, the EVA adhesive layer and the nanometer separation film layer are changed, the separation of the EVA main film layer, the EVA adhesive layer and the nanometer separation film layer can be completed, and finally, the clean EVA main film layer is recovered.

Drawings

FIG. 1 is an overall front view of the present invention;

FIG. 2 is a schematic structural view of an EVA adhesive film according to the present invention;

FIG. 3 is a schematic view of the structure of the isolation flat film of the present invention.

In the figure: 1. an EVA adhesive film; 2. organic glass; 3. an isolating flat optical film; 4. a moisture-proof melting adhesive tape; 5. an EVA main film layer; 6. an EVA adhesive layer; 7. a nano-spacer film layer; 8. UV glue-fixing layer; 9. a heat reflective film layer; 10. and (5) a tackifying glue layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-3, an embodiment of the present invention is shown: an environment-friendly EVA (ethylene vinyl acetate) intermediate film of composite organic glass 2 comprises an EVA adhesive film 1, wherein the EVA adhesive film 1 comprises an EVA main film layer 5, an EVA adhesive layer 6 and a nanometer separation film layer 7, the nanometer separation film layer 7 is arranged on the surfaces of two sides of the EVA main film layer 5, the EVA adhesive layer 6 is arranged on the outer surface of the nanometer separation film layer 7, two sides of the EVA adhesive film 1 are respectively provided with an isolation flat film 3, the EVA adhesive film 1 is arranged between the organic glass 2, the nanometer separation film layer 7 is arranged between the EVA main film layer 5 and the EVA adhesive layer 6, the EVA adhesive layer 6 is positioned on the outermost side of a film body and can be attached to an object, when the glass with the EVA adhesive film 1 is put into a high-temperature heating box to be heated to 130-150 ℃ during the recovery operation, molecules of the nanometer separation film layer 7 can move at high speed, gaps among the molecules can be increased, and the connection structures between the EVA main film layer 5 and the EVA adhesive layer 6 and the nanometer separation film layer 7 can be changed, the three can be separated, and finally, the clean EVA main film layer 5 is recycled.

Further, keep apart plain film 3 and include that heat reflects the rete 9, UV glues 8 and tackify glue film 10 admittedly, and UV glues 8 and tackify glue film 10 and is connected with the laminating of heat reflects the rete 9 admittedly, and heat reflects the rete 9 can reflect the sunlight, prevents that the glass high temperature from leading to the condition that EVA glued membrane 1 appears softly.

Further, UV glues layer 8 and is connected with the laminating of organic glass 2, UV glues layer 8 will adhere completely on organic glass 2's surface after contacting the ultraviolet ray in the sunlight, can not receive the condition of temperature and change appears, and tackified adhesive layer 10 is connected with the laminating of EVA adhesive layer 6, tackified adhesive layer 10 and EVA adhesive layer 6 can fuse the structure that becomes the integral type together each other, can increase EVA glued membrane 1 like this and keep apart the degree of adhesion between the plain film 3, avoid appearing the condition that drops.

Further, all be provided with dampproofing melting adhesive tape 4 around organic glass 2, and dampproofing melting adhesive tape 4 is connected with the laminating of EVA glued membrane 1, accomplishes compound gluing glutinous back through EVA glued membrane 1 at organic glass 2, beats dampproofing melting adhesive tape 4 around organic glass 2, can make inside intermediate layer keep in vacuum state like this, thereby avoids the air to enter into the moisture that 1 inside EVA glued membrane leads to the membrane body to absorb the air and produces the matter and become.

Further, the preparation method for attaching the EVA adhesive film 1 comprises the following steps:

the method comprises the following steps: using ethylene and vinyl acetate as main raw materials, and then copolymerizing the main raw materials under high pressure to obtain resin as basic resin;

step two: then adding a tackifier for improving the bonding strength, a glue solution viscosity and solidification speed regulator and a small amount of antioxidant, uniformly stirring, and pouring the raw materials into a film making machine for processing a film body;

step three: dividing the molded membrane body into an EVA main membrane layer 5 and an EVA adhesive layer 6, wherein the thickness of the EVA main membrane layer 5 is 270-300 mu m, and the thickness of the EVA adhesive layer 6 is controlled to be 100-130 mu m;

step four: preparing a nano-interlayer 7 by using EVA (ethylene-vinyl acetate copolymer) as a base material and matching with a high polymer material under the processing of a vacuum high-pressure machine, wherein the molecular gap is 3-4;

step five: covering the outer surface of the EVA main membrane layer 5 with the nano-separation membrane layer 7, covering the outer side of the EVA adhesive layer 6, and then putting the EVA adhesive layer into a hot press to be pressurized to form an EVA adhesive film 1;

step six: at last, the surface of the EVA adhesive film 1 is pasted with non-transparent release film paper, and the EVA adhesive film needs to be matched with the isolation flat film 3 for pasting.

Further, in the second step, the tackifier is rosin, and the solidification speed regulator is paraffin.

Further, in the fifth step, the thickness of the EVA adhesive film 1 after hot press molding is 420-425 μm.

Further, in the sixth step, the thickness of the isolation flat film 3 is 25 to 30 μm.

The working principle is as follows: when in use, ethylene and vinyl acetate are used as main raw materials, then resin obtained by copolymerization under high pressure is used as basic resin, then a tackifier for improving bonding strength, a glue solution viscosity and solidification speed regulator and a small amount of antioxidant are added, the raw materials are poured into a film making machine after being uniformly stirred for processing a film body, the formed film body is divided into an EVA main film layer 5 and an EVA adhesive layer 6, wherein the thickness of the EVA main film layer 5 is 270-300 mu m, the thickness of the EVA adhesive layer 6 is controlled to be 100-130 mu m, a nano separation film layer 7 is prepared by using EVA as a base material and matching with a high polymer material under the processing of a vacuum high-pressure machine, the molecular gap is 3-4, the nano separation film layer 7 covers the outer surface of the EVA main film layer 5, the EVA adhesive layer 6 covers the outer side, then the EVA adhesive layer is placed into a hot press for pressurization to form an EVA adhesive film 1, and finally non-transparent release film paper is pasted on the surface of the EVA adhesive film 1, when in use, the adhesive can be matched with the isolation flat film 3 for adhesion, firstly, the isolation flat film 3 is arranged on one side, the UV glue fixing layer 8 is connected with the organic glass 2 in an attaching way, the UV glue fixing layer 8 can be completely adhered to the surface of the organic glass 2 after contacting ultraviolet rays in sunlight without changing under the condition of temperature, then, the tackifying glue layer 10 is connected with the EVA glue layer 6 in an attaching way, the tackifying glue layer 10 and the EVA glue layer 6 can be mutually fused into an integrated structure, thus the adhesion degree between the EVA glue film 1 and the isolation flat film 3 can be increased, the falling-off condition is avoided, after the organic glass 2 is compositely adhered through the EVA glue film 1, the moisture-proof melting adhesive tape 4 is arranged around the organic glass 2, thus the internal interlayer can be kept in a vacuum state, the air is prevented from entering the EVA glue film 1 to cause the film body to absorb moisture of the air, thereby generating quality change, after organic glass 2 finishes compounding through EVA glued membrane 1 and glues glutinous, beat dampproofing melting adhesive tape 4 around organic glass 2, can make inside intermediate layer keep in vacuum state like this, thereby avoid the air to enter into 1 inside moisture that leads to the membrane body to absorb the air of EVA glued membrane and produce the qualitative change.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.